London | I’m in a black cab, on the way to an interview. My driver, being a London cabbie, is well up for a chat. He’s discovered I’m a journalist and has started telling me about all the famous folk he’s had in the cab: the guitarist from Led Zeppelin, Michael Caine, Natalie Imbruglia – the list goes on and on. “So who are you meeting, then?” he asks.

“Alastair Campbell,” I tell him – the man most famous for being former British prime minister Tony Blair’s ubiquitous, loved-and-loathed spin doctor.